html, body, #app {
  width: 100%;
  height: 100%;
}

html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, font, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td {
  margin: 0;
  padding: 0;
  border: 0;
  outline: 0;
  font-size: 100%;
  vertical-align: baseline;
  background: transparent;
  box-sizing: border-box;

}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

body {
  -webkit-font-smoothing: antialiased;
  line-height: 24px;
}

fieldset, img {
  border: 0;
}

ol, ul, li {
  list-style: none;
}

img {
  /* border 0 照顾低版本浏览器 如果 图片外面包含了链接会有边框的问题 */
  border: 0;
  /* 取消图片底侧有空白缝隙的问题 */
  vertical-align: middle;
}

h1, h2, h3, h4, h5, h6 {
  font-size: 100%;
}

em,
i {
  font-style: normal;
}

input, button, select, textarea {
  outline: none;
}

button {
  cursor: pointer;
  border: 0;
}

textarea {
  resize: none;
}

p {
  text-align: justify;
  text-justify: distribute;
}

a {
  color: #666;
  text-decoration: none;
}

a:hover {
  color: black;
  text-decoration: none;
}

blockquote, q {
  quotes: none;
}

blockquote:before, blockquote:after,
q:before, q:after {
  content: none;
}

/* remember to define focus styles! */
:focus {
  outline: 0;
}

/* remember to highlight inserts somehow! */
ins {
  text-decoration: none;
}

del {
  text-decoration: line-through;
}

/* 清除浮动 */
.clearfix:before,
.clearfix:after {
  content: '';
  display: table;
  /*转换成表格*/
}

.clearfix:after {
  clear: both;
}

.clearfix {
  *zoom: 1;
}
